WO2018041829A1 - Dispositif de lubrification de palier de plateau rotatif et procédé de lubrification d'un palier à roulement de plateau rotatif - Google Patents

Dispositif de lubrification de palier de plateau rotatif et procédé de lubrification d'un palier à roulement de plateau rotatif Download PDF

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Publication number
WO2018041829A1
WO2018041829A1 PCT/EP2017/071659 EP2017071659W WO2018041829A1 WO 2018041829 A1 WO2018041829 A1 WO 2018041829A1 EP 2017071659 W EP2017071659 W EP 2017071659W WO 2018041829 A1 WO2018041829 A1 WO 2018041829A1
Authority
WO
WIPO (PCT)
Prior art keywords
lubricant
valve
pressure
bearing
lubricating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2017/071659
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German (de)
English (en)
Inventor
Sebastian Sigel
Fabian Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Heller Maschinenfabrik GmbH
Original Assignee
Gebrueder Heller Maschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebrueder Heller Maschinenfabrik GmbH filed Critical Gebrueder Heller Maschinenfabrik GmbH
Publication of WO2018041829A1 publication Critical patent/WO2018041829A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • F16N7/385—Central lubrication systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B23Q11/122—Lubricant supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F16N29/02—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2220/00—Machine tool components
    • B23Q2220/004—Rotary tables
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
    • F01M5/025—Conditioning lubricant for aiding engine starting, e.g. heating by prelubricating, e.g. using an accumulator
    • F01M2005/028—Conditioning lubricant for aiding engine starting, e.g. heating by prelubricating, e.g. using an accumulator with a reservoir under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/20—Amount of lubricant
    • F16N2270/30—Amount of lubricant intermittent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/60—Pressure
    • F16N2270/64—Set-pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/70—Supply
    • F16N2270/72—Supply on-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2280/00—Valves

Definitions

  • the invention relates to a bearing lubricating device, in particular for lubricating a bearing a machine tool, in particular a rotary table bearing, with rolling bearing grease, ⁇ such as a method for lubricating a bearing of a machine tool by means of a lubricant pump, which via a we ⁇ least sections flexible lubricant line is connected to the bearing, at the bearing end an end
  • On / off valve is arranged.
  • the lubrication system has a continuously operating pump which is connected to a supply line for supplying lubricant distributors. To the supply line, a pressure accumulator is connected, which is maintained at a pressure above 22 bar and serves to overcome the compressibility of the lubricant.
  • This centering ⁇ ralschmierstrom is set up for the supply of relatively large required for chains lubricant quantities.
  • the lubricant is constantly under pressure.
  • An outlet valve ⁇ are the outlet freely periodically so that only the Ket ⁇ tenbolzen be lubricated.
  • the lubricant in particular a pasty lubricant, such as roller bearing grease, conveyed by means of a lubricant pump via a lubricant line to the rotary table bearing, with a valve means is pre ⁇ see, the lubricant flow to the camp defined ⁇ free and lock and otherwise relieve the lubricant line under pressure.
  • the release of the lubricant flow to the camp he ⁇ follows by the valve device according to the invention only after building a sufficient pressure in the lubricant line This ensures that the elasticity of the lubricating substance and, possibly long, line is overcome and thus on the Bearings actually lubricant arrives and is placed in the warehouse.
  • valve device it is ensured by a defined opening and closing of the valve device to the water point that only the desired amount of lubricant exits and thus both a Kochschmie ⁇ tion with the associated contamination of the machine or a lack of lubrication can be avoided.
  • defined delivery of lubricant portions can be achieved that provided on the bearing collecting pockets over the life of the bearing for receiving used lubricant sufficient without being overcrowded.
  • the valve device of the invention Schmiervor device can also be used to make the lubricant line after delivery of one or more lubricant portions depressurized.
  • the lubricant in the lubricant line is depressurized, thus counteracting a tendency to segregation of the lubricant components.
  • the segregation of thickener and lubricating oil is avoided, so that the lubricant retains its desired pasty consistency.
  • Suitable lubricant pumps are any lubricant pump suitable for pumping suitable lubricants, in particular roller bearing grease.
  • a piston ⁇ pump is provided with one or more pump pistons.
  • the lubricant pump is assigned a Druckre ⁇ gel device.
  • the pressure control device may for example comprise a pressure sensor, via which the control device detects the pressure prevailing in the lubricant line pressure, and then the lubricant pump in accordance ansteu ⁇ ert.
  • a pressure sensor also apply, the mono- pressure dependent on and off a pressure switch.
  • it has a switching hysteresis. This allows the rich He ⁇ the set pressure eg due to the switch-on of the
  • the pressure sensor of the pressure control device can at a, as seen from the lubricant pump, the far end of the
  • Lubricant line i. be arranged near the camp.
  • the line length from the pressure sensor to the bearing is preferably shorter than the line length from the pressure sensor to the lubricant pump.
  • the pressure sensor and the bearing preferably associated with the valve means on / off valve is arranged.
  • the pressure sensor and the open / close valve are preferably disposed in front ⁇ in close proximity. This will si ⁇ ensure that the back pressure regulating device at the on / off valve ⁇ , that ultimately provides the necessary outlet for a defined quantum of pressure on the stock.
  • the lubricant line may include a flexible element or a flexible portion, for example in the form of a hose. This contributes to the elasticity of the pressurized lubricant volume.
  • Lubricant line to be established pressure to be made dependent on the lubricant temperature to compensate for viscosity changes.
  • the lubricant temperature may be detected by a temperature sensor, which may preferably be arranged on the lubricant line, but possibly also elsewhere, for example in the lubricant reservoir or on the lubricant pump.
  • the dependence of viscosity on temperature can be taken into account by the control device by means of a stored therein viscosity table or egg ⁇ nem formulaic relationship. Different types of lubricants can have very different visco ⁇ sticianskennlinien in terms of temperature. In a particularly preferred embodiment, the control device may be configured to take this relationship into account additionally.
  • the pressure relief of the lubricant line after lubrication prevents lubricant segregation and causes the lubricant during a lubricating Operation without pressure-related damage, in particular without Ent ⁇ mixture is delivered.
  • the lubricant line is first brought by means of the lubricant pump to ei ⁇ nen set pressure of, for example, 20 bar, after which the pump is stopped.
  • the maintenance of pressure in the line can be ensured by a non-return valve which is arranged between the piston pump and lubricant line, or prevented by the property of the lubricant pump itself, which typi cally ⁇ a lubricant return current.
  • the open / close valve can be opened, and thus the bearing can be lubricated. Due to the pressure, the lubricant exits abruptly during the lubrication process, ie at high speed.
  • the control device monitors the pressure drop in the lubricant line and closes the open / close valve depending on the embodiment, either after a given period of time or after a desired pressure drop, the ent leaked amount of lubricant ent ⁇ speaks. If there is no pressure drop recorded, an error has occurred, and it is assumed that no lubricant has left ⁇ . This error can be signaled to the higher-level machine control and other actions, such as to trigger the output of an error signal or stopping the Ma ⁇ machine.
  • the invention is suitable for the lubrication of bearings in general, and plain bearings, but in particular for the lubrication of highly loaded bearings in machine tools, especially bearings that at or near the specified by the manufacturer maximum speed, or in the vicinity of the manufacturer specified maximum load (radial force, axial force, overturning moment) and / or at or near the manufacturer specified maximum load (radial force, axial force, overturning moment) and / or at or near the
  • Figure 1 is a machine tool with a rotary table, in schematic representation ⁇ tjoner,
  • FIG. 2 shows the lubricating device of the rotary table roller bearing of the machine tool according to FIG. 1, in a schematic representation, FIG. Figure 3 Activity-time diagrams to illustrate the operation of the rotary table bearing lubricating device of Figure 2.
  • a machining ⁇ center 10 which has a turntable 11 for receiving workpieces.
  • This is generally on a machine frame 12 fixed, or, as is preferred and ⁇ is indicated schematically by an arrow 13 in Fi gur 1, arranged movably in at least one direction.
  • the turntable 11 may additionally be pivotally mounted about a horizontal axis, which is not further illustrated in Figure 1.
  • the turntable 11 has a table body 14, the to
  • the table body 14 is rotatably mounted in the turntable frame 15 about an axis 16, to which a rolling bearing 17 is used.
  • a rolling bearing 17 is used.
  • This is preferably a cross roller bearing, but it may also have a different design, such as ball bearings, roller bearings, tapered roller bearings, axial-radial Zylinderrollenla- ger or the like.
  • the rolling bearing 17 may comprise one or more adjacent or axially spaced Einzelmélzla ⁇ ger.
  • the rolling bearing 17 is associated with a lubricating device 18, which serves to supply the rolling bearing 17 with lubricant, which is removed from a lubricant reservoir 19.
  • a lubricant in the lubricant reservoir 19 before ⁇ preferably a grease, in particular provided for the lubrication of rolling bearings grease (rolling bearing grease, for example, according to consistency class NLGI class 2) is provided. It is a pasty lubricant, which consists of a
  • Lubricating oil and a thickener typically alkali or alkaline earth salts of fatty acids.
  • Lubricator 18 is not limited to use with such greases.
  • the lubricating device 18 is illustrated in the machining center 10 in Figure 1 and separately in Figure 2. It comprises, in addition to the container 20 for the lubricant reservoir 19, a motor-driven pump 21, for example in the form of a piston pump ⁇ .
  • a motor-driven pump 21 for example in the form of a piston pump ⁇ .
  • Other suitable for the promotion of pasty lubricants pumps may, if necessary, equally used.
  • a lubricant ⁇ line 22 is connected, which leads to the rolling bearing 17.
  • the lubricant line 22 may have a considerable length of, for example, 10 m or more.
  • the lubricating device 18 can be accommodated in this respect at a considerable distance from the rolling bearing 17 to be lubricated.
  • the lubricant pipe 22 completely or partially, ie, is flexible Oilbil ⁇ det at least in a section, for example.
  • By having a hose portion 23 This is flexurally flexible and allows, for example, the li ⁇ -linear process of the turntable 11 at rest lubricating device 18 or the pivoting of the same about a horizontal axis.
  • the volume of the lubricant line 22 may be considerable overall and, for example, accommodate a quantity of lubricant which is about as large as the amount of grease introduced during the life of the roller bearing 18 or even greater. This grease has a retention period of months or years in the Schmierstofflei ⁇ tung 22nd
  • valve device 24 belonging to the two valves VI and V2.
  • the valves VI and V2 are preferably 2/2-way valves and arbei ⁇ each as open / close valve. Their operation is carried out by a central control device 25.
  • Valves VI, V2 can be electrically, hydraulically, pneumatically or otherwise operated.
  • the valve V2 is preferably disposed at the pump 21 near the end of the lubricant line 22 and controls a pressure relief passage 26 through which the lubricant line 22 is in communication with the lubricant reservoir 19.
  • the valve VI is arranged on the end of the lubricant line 22 close to the rolling bearing 17 in order to prevent the inflow of
  • Lubricant line 22 a pressure sensor 27 is arranged.
  • the pressure sensor 27 is a pressure switch which indicates whether the pressure present in the lubricant line 22 exceeds or falls below a limit value.
  • this pressure switch has a switching hysteresis.
  • the pressure sensor 27 indicates an analog or digital value indicative of the measured pressure.
  • the lubricant line 22 may be connected to an overpressure safety device 28.
  • the lubricating device 18 described so far operates as follows:
  • valve VI is closed at “0" and open at “1.”
  • Valve V2 is open at "0" and closed at "1.”
  • valve VI is an opening valve (closed at rest) and valve V2 is a closing valve (open at rest) .
  • This wiring of valve V2 has the advantage that is GE ⁇ ensured in case of power failure or cable break, that the lubricant duct is reliably relieved of pressure. A cable break can then be detected by the control device, because can not build up pressure at the pressure sensor 27.
  • the rolling bearing 17 is provided with a grease filling, which is sufficient for operation over a certain period of time and / or for a certain number of revolutions and / or changes of direction.
  • a lubrication requirement can be determined, for example, after the timeout, after exceeding a certain number of revolutions or according to other criteria.
  • the higher-level control can be provided with a device for detecting the lubricant requirement. This can be, for example, an operating hours counter, a revolution counter or a sensor that detects the running properties of the roller bearing 17. Accordingly, a lubrication requirement generating signal S and to the control device 25 gelie ⁇ fert. Alternatively, the controller 25 may be configured to automatically determine the lubrication requirement according to one or more of the above criteria.
  • the controller 25 or the übergeordne ⁇ te control during operation of the rolling bearing at high speed, high load and / or high temperature detect a lubrication requirement and a signal S trigger while operating at low speed, load or low temperature no lubrication request signal S triggers.
  • a limit can be set, counted above the rotations ⁇ who and after exceeding a number of revolutions limit the lubrication request signal is generated while rotations are not counted u ⁇ terrenz the limit.
  • the speed count is preferably already triggered when only one of the limits for speed, load or temperature is exceeded.
  • valve V2 receives a closing signal, so that both valves VI, V2 are closed, and it is the motor M of the pump 21 is turned on. This begins the pressure build-up in the line 22, which is completed at a time tl.
  • the control device 25 detects that the desired pressure Psoii has been reached and stops the engine M.
  • the lubricant line 22 is now charged with lubricant which is under the pressure Psoii.
  • the valve VI is now briefly opened at a time t2.
  • the lubricant driven by its tendency to expand and the elasticity, in particular of the hose section 23, blows.
  • the leaking lubricant quantity is dependent on the length of the time interval until closing, ie on the time interval between the times t2 and t3 and the pressure Ps o ii.
  • the auftre in the interval t2 to t3 ⁇ tende pressure drop is indicative of the leaked
  • valve VI Closing the valve VI and before opening the valve V2 detected by the pressure sensor 27. Should no pressure drop occur, this circumstance is recognized by the control device 25 as an error and sent an error signal to the higher-level machine control, which then takes a corresponding action, such as emits an alarm signal or stops the machining center. Alternatively, the valve VI is closed only when an intended pressure drop .DELTA. ⁇ is detected. If no pressure drop also occurs here, this can be regarded as an error and sent as an error signal to the Ma ⁇ machine control, which then takes a corresponding action, such as emits an alarm or shut down the machining center.
  • the pressure difference ⁇ may, for example, correspond to the hysteresis of a pressure switch when such is used as a pressure sensor 27. He turns on, for example, upon reaching the target pressure Ps o ii, whereby the pump 21 is turned off. It switches off, for example, after a pressure reduction by the amount ⁇ , which corresponds to a switching hysteresis, again, thus closing the valve VI.
  • switch-on and switch-off pressure values can be specified by the control device 25 in the case of a pressure sensor 27 having a fine-stepped or analog response.
  • the lubricant line 22 is initially still under Print.
  • the valve V2 is de-energized at a time t4 now thus opened and, thus, the lubricant present in the lubricant ⁇ line 22 is depressurized and remains. It can ent ⁇ tension in the lubricant reservoir 19. If the lubricant line 22 is depressurized, the valve V2 can be closed at a time t5.
  • valve V2 which uses an opening valve (closed at rest) as the valve V2
  • the valve V2 can optionally be closed again after successful pressure reduction.
  • the period t2-t3 is preferably in the range of fractions of a second to a few seconds.
  • the period of time t4-t5 can be seconds or even minutes (even significantly longer periods) and in any case is so long that no appreciable overpressure remains in the lubricant line 22.
  • valve V2 remains de-energized after time t4 and thus open. The grease contained in the line 22 can therefore relax completely, thereby preventing segregation of the grease.
  • a lubricating device 18 for lubricating grease-lubricated roller bearings 17, in particular turntables or similar machine parts supplies the rolling bearing 17 with a lubricant in the form of grease, preferably over a longer line whose volume and / or elasticity is so great that it sufficient to supply a lubricant quantum by expansion of the grease and / or contraction of the lubricant line.
  • a lubricant in the form of grease preferably over a longer line whose volume and / or elasticity is so great that it sufficient to supply a lubricant quantum by expansion of the grease and / or contraction of the lubricant line.
  • an on / off valve VI is preferably provided at the bearing end of the lubricant line 22.
  • preference ⁇ a further valve V2 is provided by means of which the lubricant line 22 is relieved of pressure in lubrication intervals.
  • a pressure sensor 27 monitors the pressure in the lubricant line, which is constructed by means of a lubricant pump 21
  • valve VI After building up the pressure in the lubricant line 22, the valve VI is opened briefly to omit a lubricant ⁇ quantum. Thereafter, the valve V2 is opened and the lubricant line 22 is depressurized. This vermei ⁇ det a demixing of the grease for days or weeks in optionally lubricating long pauses.
  • the control device 25 may be purchasedbil ⁇ det that it detects a malfunction of the lubricating device 18 by a runtime monitoring of the pump 21. If the predetermined pressure Psoii at the pressure sensor 27 is not reached after a defined period of time (S-tl) of the pump 21, the control device 25 switches off the pump 21 and outputs an error signal.
  • a malfunction can occur, for example, as a result of leaks in the lubricant line (leakage), malpositions of the valves VI or V2 or a defect in the pump 21. For example, if the valve VI is opened incorrectly, while the pump 21 is to cause a pressure build-up, the entire supply of lubricant 19 is conveyed from the container 20 into the rolling bearing 17. This can lead to considerable damage to the rolling bearing 17 by over-lubrication. Due to the time-dependent monitoring of the pressure build-up such a malfunction is detected and prevents damage.
  • the invention can be used for all types of bearings, for example, plain bearings or rolling bearings, in particular for linear bearings and roller bearings.
  • a lubricating device 18 for lubricating grease-lubricated bearings 17, in particular turntables or the like. schin share a lubricant in the form of grease to the bearing 17 is preferably over a longer line, the Vo ⁇ lumen and / or elasticity is so large that it is sufficient to supply a lubricant Quantum by expansion of the grease and / or contraction of the lubricant line.
  • an open / close valve VI is preferably provided on the bearing-side end of the lubricant line 22.
  • a further valve V2 is preferably provided, by means of which the lubricating ⁇ line 22 is relieved of pressure in lubrication intervals.
  • a pressure sensor 27 monitors the pressure in the lubricant line, which is constructed by means of a lubricant pump 21 only as needed.
  • valve VI After building up the pressure in the lubricant line 22, the valve VI is briefly opened to omit a lubricant ⁇ quantum. Thereafter, the valve V2 is opened and the lubricant line 22 is depressurized. This vermei ⁇ det a demixing of the grease for days or weeks in optionally lubricating long pauses.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un dispositif de lubrification (18) pour lubrifier des paliers (17) lubrifiés à la graisse, en particulier de plateaux rotatifs ou de parties similaires de machine. Selon l'invention, ledit dispositif de lubrification achemine jusqu'au palier un lubrifiant sous forme de graisse, de préférence par un long conduit, dont le volume et /ou l'élasticité sont si importants, qu'il suffit pour fournir une quantité fixée de lubrifiant par dilatation de la graisse de lubrification et/ou par contraction du conduit pour lubrifiant. Pour assurer un dosage précis de la quantité fixée de lubrifiant, de préférence une soupape de marche/d'arrêt V1 est située à l'extrémité côté palier du conduit pour lubrifiant (22) . En outre, de préférence une autre soupape V2 permet de détendre le conduit pour lubrifiant (22) pendant des intervalles de pause entre des phases de lubrification. Un capteur de pression surveille la pression régnant dans le conduit pour lubrifiant, laquelle n'est établie qu'en fonction des besoins au moyen d'une pompe à lubrifiant (21). Une fois la pression établie dans le conduit pour lubrifiant (22), la soupape V1 est brièvement ouverte de manière à permettre l'évacuation de la quantité fixée de lubrifiant. La soupape V2 est ensuite ouverte et le conduit pour lubrifiant (22) est commuté sans pression. Ces mesures permettent d'éviter que la graisse de lubrification se dissocie pendant des intervalles de pause entre des phases de lubrification, lesquels peuvent durer des jours ou des semaines.
PCT/EP2017/071659 2016-08-30 2017-08-29 Dispositif de lubrification de palier de plateau rotatif et procédé de lubrification d'un palier à roulement de plateau rotatif Ceased WO2018041829A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016116085.7A DE102016116085A1 (de) 2016-08-30 2016-08-30 Drehtischlager-Schmiervorrichtung und Verfahren zur Schmierung eines Drehtisch-Wälzlagers
DE102016116085.7 2016-08-30

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WO2018041829A1 true WO2018041829A1 (fr) 2018-03-08

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PCT/EP2017/071659 Ceased WO2018041829A1 (fr) 2016-08-30 2017-08-29 Dispositif de lubrification de palier de plateau rotatif et procédé de lubrification d'un palier à roulement de plateau rotatif

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WO (1) WO2018041829A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN112856197A (zh) * 2021-01-18 2021-05-28 平顶山天安煤业股份有限公司 一种用于掘进机内喷雾水密封自动润滑装置

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